Positional correction algorithm of a laser galvanometric scanning system used in rapid prototyping manufacturing

The laser galvanometric scanning technique has brought rapid prototyping manufacturing into a new era. However, a number of errors severely affect the prototyping accuracy of the work piece. This paper gives a detailed analysis of the errors involved in the galvanometric scanning system used in rapid prototyping manufacturing. A positional correction algorithm has been developed to rectify the errors to meet the precision requirements of the processing. Experimental results based on a selective laser stinting (SLS) machine prove the efficiency of the positional correction algorithm.

[1]  Dong Gyu Kim,et al.  Distortion correction for digital subtraction angiography imaging: PC based system for radiosurgery planning , 2003, Comput. Methods Programs Biomed..

[2]  K W Leszczynski,et al.  Computer-aided radiation therapy simulation: image intensifier spatial distortion correction for large field of view digital fluoroscopy. , 1998, Physics in medicine and biology.

[3]  Duc Truong Pham,et al.  A comparison of rapid prototyping technologies , 1998 .

[4]  E. Gronenschild,et al.  Correction for geometric image distortion in the x-ray imaging chain: local technique versus global technique. , 1999, Medical physics.

[5]  Beth A. Schueler,et al.  Correction of image intensifier distortion for three-dimensional x-ray angiography , 1995, Medical Imaging.

[6]  N. Pallikarakis,et al.  A novel approach for distortion correction for X-ray image intensifiers. , 2003, Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society.

[7]  T W Griffin,et al.  Digital radiotherapy simulator. , 1998, Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society.